#include <pthread.h>
#include <iostream>
#include <string>
#include <unistd.h>

//该count叫做线程的局部存储！！！
__thread int count = 1;

//线程局部存储有什么用？ 全局变量，我又不想让这个全局变量被其他线程看到！
//线程局部存储，只能存储内置类型和部分指针

std::string Addr(int &c)
{
    char addr[64];
    snprintf(addr,sizeof(addr),"%p",&c);
    return addr;
}

void *routine1(void *args)
{
    (void)args;
    while (true)
    {
        std::cout << "thread-1,count=" << count<<"[我来修改count]"<<"，&count"<<Addr(count) << std::endl;
        count++;
        sleep(1);
    }
}
void *routine2(void *args)
{
    while (true)
    {
        std::cout << "thread-2,count=" << count<<"，&count"<<Addr(count) << std::endl;
        count++;
        sleep(1);
    }
}

int main()
{
    pthread_t tid1, tid2;
    pthread_create(&tid1, nullptr, routine1, nullptr);
    pthread_create(&tid2, nullptr, routine2, nullptr);

    pthread_join(tid1, nullptr);
    pthread_join(tid2, nullptr);

    return 0;
}